A monitor warship type of ship based on the USS Monitor and built by several navies for coastal defence in the 1860s and 1870s. It reappeared in a different form during the First World War and lasted unitl the end of the Second World War

This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. If an article link referred you here, you might want to go back and fix it to point directly to the intended page.